{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Digitalis arrhythmia , which is suppressed by Na channel blockers , was induced by intermittent intravenous ( i . v . ) injection of ouabain in pentobarbital - anesthetized dogs ."}
{"Chemical": ["Digitalis", "Na", "ouabain", "pentobarbital"], "Disease": ["arrhythmia"]}